Triangle ABC is dilated from point O. What is the scale factor if |OA| = 2 and |OA’| = 7?

(A.) 2

(B.) 2.5

(C.) 3

(D.) 3.5

Aliter of water contains about 3.35 x 10^25 molecules. a certain river discharges about 2.9x 10^8 l of water every second. about how many molecules does the river discharge every minute? write your answer in scientific notation